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Information technology. Telecommunications and information exchange between systems. Private integrated servi…

Private Integrated Services Network (PISN); Specification, functional model and information flows; Call prior…

Overview SIST EN 301 655 V1.1.1:2005 is a European Standard specifying the supplementary services of call priority interruption and call priority interruption protection within Private Integrated Ser…

Private Integrated Services Network (PISN); Specification, functional models and information flows; Call prio…

Overview SIST EN 301 655 V1.2.1:2005 defines essential specifications for the supplementary services of Call Priority Interruption (CPI) and Call Priority Interruption Protection (CPIP) within Privat…

Private Integrated Services Network (PISN); Specification, functional models and information flows; Call prio…

Private Integrated Services Network (PISN); Specification, functional model and information flows; Call prior…

Information technology — Telecommunications and information exchange between systems — Private Integrated Ser…

Information technology — Telecommunications and information exchange between systems — Private Integrated Ser…

Overview ISO/IEC 15991:2003 defines two PISN (Private Integrated Services Network) supplementary services: Call Priority Interruption (SS‑CPI) and Call Priority Interruption Protection (SS‑CPIP). The…